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Reproductive parameters and growth in the fossorial rodent Ctenomys talarum (Rodentia: Octodontidae)

INTRODUCTION Fossorial rodents of the genera Ctenomys (Fam. Octodontidae), commonly termed « tuco-tucos », have more than 33 recognized species, broadly distributed in South America : from South Peru through Tierra del Fuego in Argentina. Mammalia, t. 55, n° 2, 1991. Although with different evolutionary origin, they have reached a way of life similar to Geomyidae and Spalacidae. Ctenomys is characterized by a high diversity in morphological, karyotypic and environmental features. The understanding of this variation associated with population biology will contribute to a better comprehension of evolutionary processes. The breeding structure, together with deme size, is considered to be the main factor that leads to chromosomal evolution (Wilson et al. 1975 ; Busch et al. 1977). The purpose of this study is to bring information on reproductive strategies and body growth of a population of Ctenomys talarum, with the aim of providing insight on its population biology, making possible comparisons of life history strategies with other species of the genera, as well as with other subterranean rodents. MATERIALS AND METHODS The study was conducted on the coastal dunes near Mar del Cobo (Partido de Mar Chiquita, Buenos Aires Province, Argentina). The area is a natural grassland with http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalia - International Journal of the Systematics, Biology and Ecology of Mammals de Gruyter

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